Wiper Blade End Sleeve Assembly to Prevent Strip Loosening
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Solution Overview
Problem
Existing wipers face difficulties in easy assembly and effective fastening of the scrapping strip, which can lead to interference with the buckling seat and loosening over time.
Innovation Solution
A wiper design featuring a buckling seat, elastic arms, a scrapping strip, and end sleeves with buckling hooks and guiding rails, where the elastic arms are connected to the buckling seat and the end sleeves block the scrapping strip, using a connecting unit with a slot channel and guiding rails to prevent loosening, and flow guiding covers to prevent rainwater entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the scrapping strip is buckled with the buckling seat first, then the assembly is complete, but the scrapping strip interferes with the buckling seat and assembly becomes difficult
Solution Approach 1:
The wiper blade is divided into separate modules: the buckling seat assembly (with elastic piece and buckling seat) and the scrapping strip assembly (with connecting piece and scrapping strip). These modules are designed to be assembled independently and then connected through the elastic piece, avoiding interference during assembly and simplifying the overall assembly process.
Solution Approach 2:
The elastic piece is pre-installed on the buckling seat with the buckling portion exposed, preparing the connection interface in advance. This preliminary arrangement allows the scrapping strip to be easily buckled onto the elastic piece without interference, making the assembly process smoother and more efficient.
2Device complexity
If the scrapping strip is buckled with the buckling seat, then the structure is simple, but the scrapping strip loosens after long-time operation
Solution Approach 1:
The elastic piece serves as an intermediary component between the buckling seat and the scrapping strip. It transmits the buckling force from the wiper arm through itself to securely fasten the scrapping strip, while its elastic properties provide continuous tension to prevent loosening during operation.
Solution Approach 2:
The elastic piece utilizes its elastic properties (change in physical state) to maintain constant tension on the scrapping strip. When the wiper arm moves, the elastic piece deforms and recovers, continuously applying securing force to prevent the scrapping strip from loosening, thereby improving fastening reliability without complicating the structure.
3Device complexity
If traditional wiper assembly is used, then the structure is simple, but rainwater can enter and cause loosening
Solution Approach 1:
The connecting piece is inserted into the slot channel of the connecting unit, creating a nested structure. The end sleeve is then sleeved over the end part of the elastic arm, covering both the connecting piece and the slot channel opening. This nested arrangement effectively seals the interface, preventing rainwater from entering and causing loosening while maintaining structural simplicity.
Solution Approach 2:
The end sleeve acts as an intermediary protective component that covers the connection interface between the elastic arm and the scrapping strip. It prevents rainwater from reaching the buckling hole and connecting unit, eliminating the harmful effect of water ingress without requiring complex sealing mechanisms.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The design allows for easy assembly and secure fastening of the scrapping strip, preventing loosening and rainwater ingress, ensuring effective operation and longevity.
Implementation Method 1
at least one elastic arm (20)... The elastic piece allows the scrapping strip to be adjacently arranged and pressed on a glass surface
Data Source
Figure 1
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AI summary
The present disclosure related to a wiper including a buckling seat (10), an elastic arm (20), a scrapping strip (40) and an end sleeve (50). The elastic arm (20) is connected to the buckling seat (10) and has an end part (21) with a buckling hole (22), and one side of the elastic arm (20) has a bottom surface (23). The scrapping strip (40) is disposed on the bottom surface (23) of the elastic arm (20). The end sleeve (50) has a buckling hook (51) buckled with the buckling hole (22). Accordingly, the wiper may be easily assembled and the scrapping strip (40) may be effectively fastened.